Vol Page/Article: ------------------------------------------------------------------------ Article Collection: View Collection Help (Click on the COLLECT ARTICLE to add an article.) ------------------------------------------------------------------------ [ Previous / Next Abstract | Issue Table of Contents | Bottom of Page <#bottom> ] Physical Review B (Condensed Matter and Materials Physics) -- August 1, 2000 -- Volume 62, Issue 5, pp. 3361-3367 Full Text: [ PDF (472 kB) GZipped PS Order Document ] ------------------------------------------------------------------------ Enhancement of perpendicular and parallel giant magnetoresistance with the number of bilayers in Fe/Cr superlattices M. C. Cyrille,1 S. Kim,1 M. E. Gomez,1 J. Santamaria,1 Kannan M. Krishnan,2 and Ivan K. Schuller1 1Department of Physics, University of California-San Diego, La Jolla, California 92093-0319 2Materials Sciences Division, National Center for Electron Microscopy, Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720 (Received 28 December 1999) We have correlated a detailed quantitative structural analysis by x-ray diffraction, transmission electron microscopy, and high spatial resolution electron energy-loss spectroscopy imaging, with the magnetization and anisotropic magnetotransport properties in sputtered Fe/Cr superlattices. To accomplish this, we developed a technique for magnetotransport measurements in metallic superlattices with the current perpendicular to the plane of the layers (CPP). Using microfabrication techniques, we have fabricated microstructured Fe/Cr pillars embedded in SiO2 and interconnected with Nb electrodes. Because of the uniform current distribution in the Nb electrodes and the minimization of the superlattice-electrode contact resistance, the method allows a simple and independent measurement of the superlattice resistance and giant magnetoresistance (GMR). Structural and magnetic characterization of [Fe (3 nm)/Cr (1.2 nm)]N superlattices (where N is the number of repetitions) indicate that the roughness is correlated and increases cumulatively through the superlattice stack with no significant change in the antiferromagnetic coupling. Both the current in-plane and CPP GMR increase with N as the roughness increases. ©2000 The American Physical Society URL: http://link.aps.org/abstract/PRB/v62/p3361 doi: 10.1103/PhysRevB.62.3361 PACS: 75.70.Cn, 75.70.Pa Additional Information ------------------------------------------------------------------------ Full Text: [ PDF (472 kB) GZipped PS Order Document ] ------------------------------------------------------------------------ References Citation links [e.g., Phys. Rev. D 40, 2172 (1989)] go to online journal abstracts. Other links (see Reference Information ) are available with your current login. Navigation of links may be more efficient using a second browser window . # M. N. Baibich, J. M. Broto, A. Fert, F. Nguyen Van Dau, F. Petroff, P. Etienne, G. Creuzet, A. Friederich, and J. Chazelas, Phys. Rev. Lett. 61, 2472 (1988) . # Y. Asano, A. Oguria, and S. Maekawa, Phys. Rev. B 48, 6192 (1993) . # R. Q. Hood, L. M. Falicov, and D. R. Penn, Phys. Rev. B 49, 368 (1994) . # J. Barnas and Y. Bruynseraede, Phys. Rev. B 53, 5449 (1996) . # P. Zahn, I. Mertig, M. Ritcher, and H. Eschrig, Phys. Rev. Lett. 75, 2996 (1995) . # S. Zhang and P. M. Levy, J. Appl. Phys. 69, 4786 (1991) . # T. Valet and A. Fert, Phys. Rev. B 48, 7099 (1993) . # W. P. Pratt, Jr., S.-F. Lee, J. M. Slaughter, R. Loloee, P. A. Schroeder, and J. Bass, Phys. Rev. Lett. 66, 3060 (1991) . # M. A. M. Gijs, S. K. J. Lenczowski, and J. B. Giesbers, Phys. Rev. Lett. 70, 3343 (1993) . # M. A. M. Gijs, M. T. Johnson, A. Reinders, P. E. Huisman, R. J. M. van de Veerdonk, S. K. J. Lenczowski, and R. M. J. van Gansewinkel, Appl. Phys. Lett. 66, 1839 (1995) . # T. Ono and T. Shinjo, J. Phys. Soc. Jpn. 64, 363 (1995). [INSPEC] # L. Piraux, J. M. George, J. F. Despres, C. Leroy, E. Ferain, R. Legras, K. Ounadjela, and A. Fert, Appl. Phys. Lett. 65, 2484 (1994) . # A. Blondel, J. P. Meier, B. Doudin, and J.-Ph. Ansermet, Appl. Phys. Lett. 65, 3019 (1994) . # K. Liu, K. Nagodawithana, P. C. Searson, and C. L. Chien, Phys. Rev. B 51, 7381 (1995) . # E. E. Fullerton, D. M. Kelly, J. Guimpel, I. K. Schuller, and Y. Bruynseraede, Phys. Rev. Lett. 68, 859 (1992) . # S. S. P. Parkin, N. More, and K. P. Roche, Phys. Rev. Lett. 64, 2304 (1990) . # I. K. Schuller, Phys. Rev. Lett. 44, 1597 (1980) ; W. Sevenhans, M. Gijs, Y. Bruynseraede, H. Homma, and I. K. Schuller, Phys. Rev. B 34, 5955 (1986) ; E. E. Fullerton, I. K. Schuller, H. Vanderstraeten, and Y. Bruynseraede, 45, 9292 (1992) ; D. M. Kelly, E. E. Fullerton, J. Santamaria, and I. K. Schuller, Scr. Metall. Mater. 33, 1603 (1995) (ScienceDirect) . [INSPEC] # R. Rennekamp, J. Thomas, B. Arnold, and K. Suenaga, Fresenius J. Anal. Chem. 361, 621 (1998) . [INSPEC] # A series of superlattices [Fe (3 nm)/Cr (1.2 nm)]20 was grown on top of Nb buffer layers with thicknesses varying from 0 to 100 nm. SUPREX simulations of the low angle x-ray spectra show a monotonic increase of sigmaa with Nb thickness. # D. G. Stearns, D. P. Gaines, D. W. Sweeney, and E. M. Gullikson, J. Appl. Phys. 84, 1003 (1998) . # S. K. Sinha, E. B. Sirota, S. Garoff, and H. B. Stanley, Phys. Rev. B 38, 2297 (1988) ; A. L. Barabasi and H. E. Stanley, in Fractal Concepts in Surface Growth (Cambridge University Press, Cambridge, 1995), p. 19. # S. F. Edwards and D. R. Wilkinson, Proc. R. Soc. London, Ser. A 381, 17 (1982). [INSPEC] # Y. Yoneda, Phys. Rev. 131, 2010 (1963) . # J. M. Colino, I. K. Schuller, V. Korenivski, and K. V. Rao, Phys. Rev. B 54, 13 030 (1996) ; M. Velez and I. K. Schuller, J. Magn. Magn. Mater. 184, 275 (1998) (ScienceDirect) . # R. Schad, P. Belien, G. Verbanck, K. Temst, V. V. Moshchalkov, Y. Bruynseraede, D. Bahr, J. Falta, J. Dekoster, and G. Langouche, Europhys. Lett. 44, 379 (1998) ; R. Schad, P. Belien, G. Verbanck, C. D. Potter, H. Fischer, S. Lefebvre, M. Bessiere, V. V. Moshchalkov, and Y. Brunynseraede, Phys. Rev. B 57, 13 692 (1998) . # R. Schad, P. Belien, G. Verbanck, V. V. Moshchalkov, Y. Bruynseraede, H. E. Fischer, S. Lefebvre, and M. Bessiere, Phys. Rev. B 59, 1242 (1999) . # W. C. Chiang, W. P. Pratt, Jr., M. Herrold, and D. V. Baxter, Phys. Rev. B 58, 5602 (1998) . # G. Verbanck, C. D. Potter, V. Metlushko, R. Schad, V. V. Moshchalkov, and Y. Bruynseraede, Phys. Rev. B 57, 6029 (1998) ; Th. Muhge, K. Westerholt, H. Zabel, N. N. Garifyanov, Yu. V. Goryunov, I. A. Garifullin, and G. G. Khaliullin, 55, 8945 (1997) . # C. Fierz, S. F. Lee, W. P. Pratt, Jr., and P. A. Schroeder, J. Phys.: Condens. Matter 2, 9701 (1990) . [INSPEC] The American Physical Society is a member of CrossRef . ------------------------------------------------------------------------ Full Text: [ PDF (472 kB) GZipped PS Order Document ] ------------------------------------------------------------------------ Citing Articles This list contains links to other online articles that cite the article currently being viewed. # Enhancement of the electronic contribution to the low-temperature specific heat of an Fe/Cr magnetic multilayer B. Revaz et al., Phys. Rev. B 65, 094417 (2002) # Interfacially dominated giant magnetoresistance in Fe/Cr superlattices J. Santamaria et al., Phys. Rev. B 65, 012412 (2002) # Perpendicular-current exchange-biased spin valve structures with micron-size superconducting top contacts R. D. Slater et al., J. Appl. Phys. 90, 5242 (2001) ------------------------------------------------------------------------ Full Text: [ PDF (472 kB) GZipped PS Order Document ] [ Previous / Next Abstract | Issue Table of Contents | Top of Page <#top> ] ------------------------------------------------------------------------ Article Collection: View Collection Help (Click on the COLLECT ARTICLE to add an article.) ------------------------------------------------------------------------ [ Homepage | Browse Available Volumes | Search | Subscriptions | Contact Information | Online Help | Exit ]